Double acting pump cylinder



Jan. 9, 1934. P. A. MYERS DOUBLE ACTING PUMP CYLINDER Filed July 25,1930 3 Sheets-Sheet 1 2 INVENTOR A TTORNE Y ukv? I P: j J aid IT a 4 zJan. 9, 1934. P. A. MYERS DOUBLE ACTING PUMP CYLINDER Filed July 23,1930 3 Sheets-Shem; 3

Patented Jan. 9, 1934 UNITED STATES DOUBLE ACTING PUllIP CYLINDER PhilipA. Myers, Ashland, Ohio, assignor to The F. E. Myers & Bro. Company,Ashland, Ohio, a

corporation of Ohio Application July 23, 1930. Serial No. 469,956

5 Claims. (01. 103-187) It is the object of my invention to provide adouble acting pump cylinder.

It is my object to provide a double acting pump cylinder which willlargely increase the amount of water delivered for a given size ofpumping equipment.

It is an object to arrange all the parts so that they move in a straightline and to provide working apparatus which can be removed to .thesurface by pulling on the sucker rod. My invention lends itself to thevarious diameter sizes and has liberal water ways so that there is noundue friction.

In particular, it is my object to provide the combination of a wellcasing, a movable cylinder, a stationary tube projecting into thecylinder supporting a stationary bucket, such cylinder being supportedby the casing and having a suitable valve for controlling the deliveryof fluid thereto from the well, and a valve associated with the movablecylinder for controlling the exit of fluid therefrom.

In particular, it is my object to provide an upper bucket with thetraveling cylinder and a stationary tube delivering into the cylinderhav ing a stationary bucket thereon acting as a piston in the cylinder;and the cylinder acts as a piston in the well casing. v

Referring to the drawings, Figure 1 is a section through the lower endof the casing and the mechanism therein which is the object of thisinvention, the parts in Figure 1 being positioned at the lowest point onthe up-stroke.

Figure 2 is a section on the line 2-2 of Figure 1.

Figure Figure 1.

Figure 4 is a section on the line 4-4 of Figure 1. a

Figure 5 is a section similar to Figure 1 showing the parts with theplunger at its highest point and with the relief valve open, it beingunderstood that the opening of the relief valve is not normal but onlyin case of the necessity for relief of any accumulated fluid in thecylinder below the valve.

Figure 6 is a View similar to Figiu'e 1 showing the parts enlarged forthe purpose of clarity.

Figure '7 is a similar view of the lower end of Figure 1 with the partsenlargedv Figure 8 is view of the parts as in Figure 5, enlarged at theupper end of the view.

Figure 9 is a similar view of the lower end of the view.

Referring to the drawings in detail, 1 is a cas 3 is a section on theline 3-3 of ing which is cylindrical throughout its length but at itsbottom has a tapered portion 2 which supports a tapered collar 3 uponwhich is exteriorly threaded the bail or cage having a lower collar 4,spaced arms 5 and an upper collar 6. 0 To the upper end of this bailcollar 6 is threaded a stationary tube '7. Within the collar 3 is apassageway 8 closed by the check valve 9 within the cage or bail. Suchcheck-valve carries the uprights 10 and collar 11 within which islocated 5 the helical seating spring 12.

The junction between the collar 3 and the casing 1 is sealed by thewasher 13.

The stationary tube '7 empties into the space A between the open end ofthe tube '7 and the bottom of the bucket 14 in a space formed by themoving cylinder 15 which is attached to the bucket 14 and travels withit. The lower end of this space is formed by the stationary bucket 16.There is a space B between the lower end of the bucket 16 and the top ofthe moving bucket 1'7 carried by the lower end of the cylinder 15, whichbucket carries a washer 18, sealing it with respect to the stationarytube '7.

Any accumulation of fluid in the space B is so relieved through theports 19'- in the stationary bucket 16, which ports are normally closedby a quick acting check-valve 20 seated by the spring 21.

The space below the bucket 18' and above the check-valve 9 is'designated C.

Returning to the upper bucket 14, it is provided with washers 22 forsealing the bucket with respect to the casing 1. The bucket also carriesa cage or bail 23 with spaced arms 24 within which operates the checkvalve 25 under the influence of the spring 26 for controlling the exitof fluid from the passageway A into the space D.

The sucker rod 27 reciprocates the sucker rod bucket 14, the upperbucket, the cylinder 15 and the cylinder bucket 17. When it is desiredto pull the entire apparatus from the well, it is observed that by acontinued pull on the sucker rod 27, all the apparatus involved hereincanbe re moved by the upward swing movement oi the sucker rod.

Opemtion.--In operation, the upward movement of the sucker rod will drawwater through the passageway 8 from the well beneath the valve 9 whichis lifted by the suction into the space C and likewise into the tube *1.At the same time the sucker rod bucket 14 which has its valve 25 closed.is elevating the liquid in the space D upwardly and out oi. the pump.On. the downstroke of the pump, the check-valve 9 is closed and thedescent of the bucket 18 on the cylinder serves to force the liquid fromthe chaniber C through the pipe 7 into the space A and the bucket on thetube '7 supports the water as the bucket 14 approaches it so that thewater is discharged under the valve 25 which is thereby lifted and theWater enters the area D.

It will be noted that the space C is the full capacity of the diameterof the casing 1, less the space required for the stationary tube 7, sothat on the down'stroke the water in the space C is discharged in thatamount less the space occupied by the tube as compared with what theupper bucket 14 discharges on the up stroke. The relief valve 20 can bequickly closed or opened, as will be noted from the constructionemployed.

When the cylinder is descending, the water is driven out of the spacebelow the cylinder and out of the cylinder top with fluid in thecylinder that is also driven out of the top of the cylinder.

It will be understood that any type of valve mechanism may be used as Ihave only shown a typical form.

It will be understood that I desire to comprehend within my inventionsuch modifications as may be clearly embraced within the scope of myclaims and invention.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is: Y

1. A double acting pump consisting of a casing, a movable cylinderhaving a valve at the top and packing to seal said cylinder from thecasing, a stationary tube, stationary sealing means for sealing thechamber above said tube from the space below and outside of said tube,and passageways extending through said sealing means, check valve meansfor closing said passageways whereby leakage liquid collected aroundsaid tube is forced upward through said passages to said chamber, thebottom of the cylinder having a bucket having a sliding fit with theoutside of the tube, an inlet from the bottom of the well, said inletbeing located below the cylinder and communicating with the space belowthe cylinder and with the tube which extends up through said bucket, anda valve located in the outlet, below the end 'of the cylinder.

2. A double acting pump consisting of a casing, a pump rod reciprocablein the casing, said rod having a connection with a lifting pistonreciprocable in said casing, a passageway extending through said piston,a valve in said passageway, a cylinder attached to said lifting piston,a stationary collar mounted insaid casing below the lower end of saidcylinder, a passageway extending through said collar, a valve in saidpassageway, a stationary tube mounted above said valve on said collarand extending up within the interior of said cylinder, a passagewayabove said valve communicating with the space below the end of saidcylinder and another passageway above said valve communicating with thein-- terior of said tube, a bucket on the lower end of said cylinderconnecting the space between the end of said cylinder and said tube,said bucket constituting the head of a force pump and adapted to forceliquid located below said bucket through said passageways and into thespace above the tube, and stationary sealing means for sealing the spaceabove said ,tube from the space below and outside said tube, apassageway extending through said sealing means and check valve meansfor closing said passageways whereby leakage liquid collected aroundsaid tube is forced upwardly through said passageways when said bucketmoves in an upward direction.

3. A doubling acting pump consisting of a casing, a pump rodrecip'rocable in the casing, said rod having a connection at its lowerend with a lifting piston also reciprocable in said casing, a passagewayextending through said piston, a valve in said passageway, a cylinderattached to said piston, a stationary tube mounted in said casing belowthe lower end of said cylinder, a passageway extending through theinterior of said tube, a valve located in said casing below said tube,there being passageways above said valve communicating with the spacebelow the end of the cylinder and with the interior of said tube, abucket on the lower end of said cylinderbridging the space between theend of the cylinder and said tube, stationary sealing means for sealingthe space above said tube from the space below and outside of said tube,a passageway extending through said sealing. means, check valve meansfor closing said passageway whereby liquid collected between the tubeand cylinder is forced upwardly through said passages to said upperspace when said cylinder moves upwardly, said bucket constituting thehead of a force pump to force liquid located below said bucket into andthrough the interior of said tube and into the space above said liftingpiston.

4. A double acting pump consisting of a casing, a pump rod reciprocablein the casing, said rod having a connection at its lower end with alifting piston also reciprocable in said casing, a passageway extendingthrough said piston, a valve in said passageway, a cylinder attached tosaid 110 piston, a stationary tube mounted in said casing below thelower end of said cylinder, a passageway "extending through the interiorof said tube, a

valve mounted on a stationary collar fixed to said casing andlocatedbelow said tube, there being passageways above said valve communicatingwith the space below the end of said cylinder and with the interior ofsaid tube, a bucket on the lower end of said cylinder bridging the spacebetween the said cylinder and said tube, scaling means for sealing thespace above said tube from the space below and outside of said tube, apassageway extending through said sealing means, check valve means forclosing said passageway whereby liquid collected between the tube andcylinder is forced upward through said passageway to the space abovesaid tube, said bucket constituting the head ofa force pump toforceliquid located below said bucket into and through the, interior of saidtube and 'into the space above said tube upon downward movement of saidbucket.

5. A double acting pump consisting of a casing, a pump rod reciprocablein the casing, said rod having a connection at its lower end with alift- 2 ing piston also reciprocable in said casing, a passagewayextending through said piston, a; valve in said passageway, a cylinderattached 'to said lifting piston, a stationary tube mounted in saidcasing below the lower end of said cylinder, a passageway extendingthrough the interior of said tube, a valve located in said casing belowsaid tube, a passageway above said valve com municating with the spacebelow the end of the cylinder and with the interior of said tube, abucket on the lower end of said cylinder substantially bridging thespace between the said casing and said tube, a second bucket for closingthe space above said tube from the space below and outside of said tube,a passageway extending through said second mentioned bucket, a. checkvalve, means for closing said passageway whereby liquid collectedbetween the tube and cylinder and below said second mentioned stationarybucket is forced upwardly through said passageway to the space abovesaid second mentioned

